Duplex brush having duo sections



Aug. 25, 1953 H. A. PETSCH DUPLEX BRUSH HAVING DUO SECTIONS 2 Sheets-Sheetl Filed April 28, 1948 Aug. 25, 1953 H. A. PETSCH 2,649,598

DUPLEX BRUSH HAVING DUO SECTIONS Filed April 28, 1948 2 sh ts sheet 2 IN V EN TOR.

Patented Aug. 25, 1953 UNITED STATES PATENT OFFICE 1 Claim.

My present invention relates to improvements in brushes of the type having a relatively fixed outer annular section and a central rotary section, the backing of which is a turbine rotor driven by a water supply under pressure for said brush sections.

The object of this invention is to provide duplex brushes for general use but especially well adapted for washing large surfaces, such as a truck, a van, a trailer, outside walls and the like.

To the above end, the invention consists of the novel devices, combination of devices and arrangement of parts hereinafter described and defined in the claim.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a plan view of the duplex brushes;

Fig. 2 is a side elevational view of the same;

Fig. 3 is a fragmentary view partly in side elevation and partlyin longitudinal vertical section taken on the line 3-3 of Fig. 1;

Fig. 4 is a fragmentary bottom plan View of the duplex brushes with some parts broken away and sectioned;

Fig. 5 is a detail view of the frames; and

Fig. 6 is an elevational view of the fixed member of the clamp.

The numeral 1 indicates duplex brushes that are laterally spaced in the same plane. These brushes 1 are identical, the one with the other, and each thereof includes an outer fixed brush section 8 and an inner rotary section 9. As the brushes 1 are identical, the one with the other, the description of the one will sufiice for the other.

The rotary brush section 9 is mounted in a housing In having a cover or back section I I, an endless depending side member I2 and an open under side. This housing It is round except that the rear portion thereof is rearwardly offset to form in said housing a water chamber I3. The sections of the side member I2 at the water chamber I3 are in converging relation, as indicated at I4, and said sections are cross-connected by a rear section I5.

Integral with the housing It is an upwardly and rearwardly projecting internally screwthreaded fitting I6. The two housings II) are rigidly connected by a yoke-like frame I1 made of a single pipe, the end portions of which are screw-threaded and secured one to each of the fittings I6. This frame I1 affords branch water supply conduits I8 that lead one to each of the fittings I6.

A tubular handle I9 has an integral extension 20, the outer end portion of which is secured in a fitting 2| by screw-threads. This tubular handle I9 and its extension 26 afi'ord a water supply conduit 22. On the outer end of the handle I9 is a fitting 23 having internal screw-threads 24. A hose leading from any suitable water supply, not shown, will in actual usage of the brushes 1 be attached to the fitting 23. For washing surfaces that cannot be reached by holding the brushes 1 by means of the handle I9, a pipe section, not shown, may be interposed between the handle 59 and the hose.

The fitting 2| is attached to the frame I1, at the longitudinal center of its transverse portion, by a clamp 25 comprising a relatively fixed section 26 and a relatively movable section 21. These clamp sections 26 and 21 are concave-convex in cross-section and fitted around the transverse portion of the frame I1. The clamp section 26 is integral with the fitting 2| and has diametrically opposite upper and lower bosses 28 that extend onto said fitting. The clamp section 21 has upper and lower bifurcated ears 29. Screws 30 extend through the ears 29 and have screw-threaded engagement with the bosses 28 and frictionally secure the clamp 25 to the frame I1 and prevent relative turning movement.

The handle extension 20 in the fitting ZI is contracted to a predetermined water-conducting capacity, and formed in the clamp section 26 at its transverse portion is an elongated port 3| that leads from the fitting 2 I. A port 32, similar to the port 3|, is formed in the transverse portion of the frame I1 and in registration with said port 3|. A packing 33 is interposed between the frame I 1 and the clamp section 26 to prevent leakage between their members.

The rotary brush section 9 includes a turbine rotor 34 that affords a backing therefor. This rotor 3 has an integral upper member 35 and a removable lower member 36. The rotor 34 is detachably secured to the housing back member II by a headed screw stud 31 that extends through a hole in said rotor at the axis thereof, and has screw-threaded engagement with an internal boss 38 on said back section. In the periphery of the rotor 34 between the members 35 and 36 thereof are circumferentially spaced pockets 39.

A plurality of tufts of brush bristles 40 are secured to the removable member 36 of the rotor 34 by a novel method disclosed and broadly claimed in my pending United States application for Letters Patent, filed November 17, 1947, under Serial Number 786,525, and entitled Brush and Method of Attaching Tufts of Bristles Thereto. This application is restricted to a single claim, to wit: claim 8 rejected February 12, 1952.

The section 15 of the housing side member [2 afiords a barrier between .the fitting 2| and the water chamber I3 and is an oblique orifice 4! arranged to direct a stream of water successively into the rotor ockets 39 as they move past the same and rotate the brush section 9.

The bristles of the fixed brush section 8 are secured to form said brush section by a pair of spiral wires 42 held in bifurcated lugs 43 integral with the housing side member l2 at the periphery thereof. The end portions 44 of the wires 13 are twisted tight and inserted through an aperture 45 in a rib 46 on fitting 16, from opposite sides thereof, and then upset to hold the same interlocked therewith. A rubber sleeve 47 surrounds each fitting l6 and covers the end portions 64 of the wire 42 to prevent scratching the surface being cleaned.

An ample supply of water is discharged from the orifice M to operate the rotor 3 and hence the brush section 9 and keep the brush sections 8 and 9 well supplied with sufficient surplus to carry off all dirt and dust loosened by said brush sections. Water in the pockets 33 in the rotors 34 after it has spent its force, flows from said pockets into the space between the rotors 34 and the housing side members 12 and is precipitated through the open under sides 12 of the housings '10 onto the work where it flows onto the brushes 1 and 9.

Obviously, by loosening the clamp 25, the frame 17 and the handle 19 and its extension 20 may be positioned in the same plane or they may be moved into diiferent relative angular adjustments. By reference to Figs. 1 and 4, it will be noted that the bristles of the two fixed brush sections 8 are in overlapped arrangement so that the bristles in said two sections are continuous, throughout the full width of said sections. The bristles in the brushes 1' support said brushes resting on a surface being cleaned so that no part of the housing I!) or attached parts come in contact with said surface.

From what has been said, it will be understood 4 that the invention described is capable of modifications as to details of construction and arrangement within the scope of the invention herein disclosed and claimed.

What I claim is:

A brush structure including two duplicate housings in the same plane and each including a side member and cover member fixed to the side member, a rotor in each housing having pockets in its periphery, a tube affording a water conduit rigidly connecting the two housings, means through which water is delivered into the tube under pressure, an orifice in each housing leading from the tube in the plane of the rotor in said housing and arranged to direct a stream of Water into its pockets as they are successively brought into alignment therewith during the rotation of said rotor, two duplicate brushes each substantially completely surrounding the sides of one of the housings, and secured thereto, the bristles of said brushes extending both above and below the housings with their upper and lower surfaces in the same planes and with the adjacent bristles of each brush interspersed one within the other, and a multiplicity of tufts of de pending bristles attached to each rotor with their lower ends substantially in the plane of the lower surfaces of the brushes.

HAROLD A. PETSCl-I.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 214,569 Jennings Apr. 22, 1879 735,592 Robinson Aug. 4, 1903 929,947 Hertzberg Aug. 3, 1909 1,068,719 West July 29, 1913 1,076,889 Kempe Oct. 28, 1913 1,277,805 Wingers Sept. 3, 1918 1,375,102 Masser Apr. 19, 1921 1,813,569 Emerson July '7, 1931 2,316,326 Garin Apr. 13, 1943 FOREIGN PATENTS Number Country Date 375,660 Great Britain June 30, 1932 

